package cn.tedu.jdbc;

/**
 * JDBC执行DML语句:UPDATE
 * 修改密码功能;
 * 输入用户名: Tony
 * 输入新密码: 654321
 * 结果: 修改成功  |  该用户不存在,修改失败;
 */
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

public class JDBCDemo2 {
    public static void main(String[] args) throws SQLException, ClassNotFoundException {
        Class.forName("com.mysql.cj.jdbc.Driver");
        Connection connection = DriverManager.getConnection(
                "jdbc:mysql://localhost:3307/tedu?characterEncoding" +
                        "=utf8&useSSL=false&serverTimezone" +
                        "=Asia/Shanghai&rewriteBatchedStatements=true",
                "root",
                "root"
        );
        Statement statement = connection.createStatement();
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入用户名：");
        String username=scanner.nextLine();
        System.out.println("请输入新密码：");
        String password=scanner.nextLine();

        int i=statement.executeUpdate("UPDATE userinfo SET password='"+password+"' WHERE username='"+username+"'");
        if(i>0){
            System.out.println("密码修改成功");
        }else {
            System.out.println("用户名不存在");
        }
        connection.close();
    }
}
